Resonant frequencies that are multiples of the fundamental frequency

Lenz's law shows electromagnetic induction

Causes a current that creates an opposing magnetic field

The back EMF produced as an inductor charges up is proportional to:

the rate of change of supply current

Resonance occurs in SHM when...

Frequency of driving force matches the natural frequency

Define internal resistance

the resistance across a battery/cell

Kirchhoff two laws are...?

Junction law (Current law) and Closed loop law (Voltage law)

In what ways are capacitors used?

All of the other answers are correct.

to change the momentum of an object....

An unbalanced force is needed, the net force is not zero.

studbud

Massive Physics Quiz

35 termsStudBud Administration2 plays

A bit of mechanics, electricity , waves and trivia

Flashcards35 cardsFPractice quizPHost liveL

Questions 35

Answers

1
guess that movie
The Grinch
How the Grinch Stole Christmas
Elf
A Christmas Carol 2009
2
Logo Trivia
Urban Planet
Maserati
Ferrari
Rolex
3
Which of the following is an example of simple harmonic motion?
A skier going off a ski jump
A pendulum
A diver coming up from underwater
A ball rolling down a hill
4
Ernest Rutherford won the Nobel prize for Physics
False
True
5
Trivia: Guess The Christmas Movie
The Train of Christmas
The Christmas Miracle
Polar Express
Christmas Express
6
Name this NZ actor
Taika Waititi
Temuera Morrison
Cliff Curtis
Jemaine Clement
7
The current limiting effect of a component in an AC circuit is called.....
Induced back EMF
Reactance
Resistance
Voltage
8
Flags
Ecuador
Philippines
Loas
Cuba
9
What do capacitors do ?
Nothing
Radiate
Stores electricity
Stores an electric charge
10
Which of these cities is NOT a national capital?
Prague
Sydney
Santiago
Bangkok
11
The Doppler Effect has a change in...
Frequency
Period
Wave Speed
All of the above
12
This NZ Island is called?
Kapiti
Stewart
Great Barrier
D'Urville
13
What are harmonics?
Contains all audio frequencies with equal intensity
The set of difference frequencies you hear in music
A pressure wave we hear with our ears
Resonant frequencies that are multiples of the fundamental frequency
14
Lenz's law shows electromagnetic induction
Causes both a voltage and a current
Causes a current that creates an opposing magnetic field
Creates a current that produces a magnetic field
Induces an opposing magnetic field
15
Who invented the cat flap?
Mr Fluffington
Albert Einstein
Sir Isaac Newton
Hillary Derstak
16
The back EMF produced as an inductor charges up is proportional to:
the charging current
the voltage across the inductor
the supply EMF
the rate of change of supply current
17
Resonance occurs in SHM when...
Frequency of driving force different from natural frequency
At many different frequencies
the frequency is highest
Frequency of driving force matches the natural frequency
18
Trivia: The skin is an organ
False
True
19
Define internal resistance
the resistance across a circuit, not including the battery/cell
the resistance across a battery/cell
the resistance across a circuit, including the battery/cell
the resistance across an individual component
20
The Doppler effect affects
Wavelength
Wave frequency
Wave amplitude
21
Science! A "fault" is a...
crack in the earth's crust
empty field
crater
train track
22
What unit do you use to measure Rotational Motion?
Radians
Joules
Units
degrees
23
The momentum change of an object is equal to the:
impulse acting on it
force acting on it
velocity change of the object
object's mass times the force acting on it
24
Kirchhoff two laws are...?
None of the above.
Ohm's law
Resistance law and Closed loop law (voltage law)
Junction law (Current law) and Closed loop law (Voltage law)
25
In what ways are capacitors used?
To block DC and pass AC
To store electric cahrge
All of the other answers are correct.
Filters to reduce electronic "noise"
26
What are cricket balls made of?
Gold
Wood
Cotton
Cork
27
to change the momentum of an object....
A torque is needed.
An unbalanced force is needed
There is no unbalanced force.
the net force is not zero.
28
The TOTAL current limiting effect of components in an AC circuit is called....
Resistance
Impedance
Total reactance
Back EMF
29
What is the formula for resonant frequency of a series LCR circuit ?
fr = 1/2π√lc
fr = 2√πlcr
fr = 1/π√lc
fr = 2πlc
30
Olympic Trivia: What Olympic sport does this represent?
Handball
Swimming
Beach Volleyball
Diving
31
The fundmental wave in a closed pipe contains ...
Nodes at both ends
1/4 wavelength
a full wavelength
1/2 wavelength
32
Flags
Italy
Portugal
Spain
France
33
At resonance in an AC circuit
current is minimum
impedance is maximum
VL = Vc
XL = Xc
34
Electromagnetic induction is a result of
Insulators keeping electricity in wires
Using electricity to create a magnet
A changing magnetic field
Electricity jumping from wire to wire
35
The population of New Zealand is roughly...
4.8 million
5 million
6 million
4 million

Massive Physics Quiz Flashcards | StudBud